Last Answer : By pushing it gently out of the board.
Description : When removing the component, under what circumstances may component leads be clipped?
Last Answer : If the component is known to be defective or if the board may be damaged by normal desoldering.
Description : In what direction are component leads clinched on single and double-sided boards?
Last Answer : In the direction of the run.
Description : Damaged or missing termination pads are replaced using what procedure?
Last Answer : Epoxy a replacement pad to the board, set an eyelet, and solder it.
Description : The leads to the primary and the high-voltage secondary windings of a power transformer usually are of what color?
Last Answer : Primary leads-black; secondary leads red.
Description : When you zero a synchro with a synchro tester, what is indicated by a jump in the synchro tester's dial when the S1 and S3 leads are momentarily shorted?
Last Answer : The synchro under test is not on electrical zero.
Description : What two receiver leads are reversed to reverse the rotor's direction of rotation?
Last Answer : 1 and S3.
Description : What leads in a simple synchro system are connected to the ac power line?
Last Answer : The rotor leads.
Description : What is the purpose of the spring or wire around the leads of a new MOSFET?
Last Answer : To prevent damage from static electricity.
Description : Leads are formed approximately how many degrees from their major axis?
Last Answer : 90 degrees
Description : Current leads voltage by 90° (ICE)
Last Answer : Current leads voltage by 90° (ICE)
Description : . A full-scale deflection on an ohmmeter scale indicates what resistance between the leads?
Last Answer : Zero.
Description : A full-scale deflection on an ohmmeter scale indicates what resistance between the leads?
Description : How do you compensate for the resistance of the test leads of a meter?
Last Answer : . By zeroing the meter with the test leads shorted.
Description : In troubleshooting a circuit in a console, you find that a resistor may be faulty. Which of the precautions listed must be observed when using an ohmmeter to carry out this test? A. Correct polarity ... D. The resistor's circuit must be de-energized and at least one end of the component isolated.
Last Answer : Answer: D
Description : While troubleshooting a circuit in an engine room central control console, a resistor is suspected of being faulty. Which of the following precautions must be observed if an ohmmeter is to be used to ... of the component isolated. D. The meter case must be grounded prior to attaching the leads.
Last Answer : Answer: C
Description : If a delicate component must be soldered into a circuit, the component may be protected from the heat of the soldering process by _____________. A. operating the soldering gun not more than 60 seconds at ... oxidizing the leads to be soldered D. coating the leads to be soldered with a light oil film
Last Answer : Answer: B
Description : Which of the following statements concerning the maintenance of solid-silver contacts in relays and auxiliary control circuits is correct? A. When necessary, they should always be dressed with a ... they should be held together with moderate pressure while emery paper is drawn between the contacts.
Description : Oxide layer formed on the non-ferrous metal surface after its annealing is (A) Removed by acid pickling (B) Hammered into the surface (C) Removed with coarse emery cloth
Last Answer : Option A
Description : After using a tape that was stored in an area where temperatures exceeded 130º F you notice pieces of oxide sticking to the recorder's tape-transport mechanism, to its magnetic heads, and onto the tape. What is the probable cause of these symptoms?
Last Answer : Oxide shedding. At temperatures above 130º F, oxide coating becomes soft and sheds.
Description : Energy can be inserted or removed from a cavity by what three methods?
Last Answer : Probes, loops, and slots.
Description : If C4 were removed from the circuit, what would happen to the output of the amplifier?
Last Answer : The output would decrease. (C4 decouples R2 preventing degenerative feedback from R2.)
Description : How should excess solder be removed from a hot soldering iron?
Last Answer : By use of a cleaning cloth.
Description : How is a flat pack removed from a pcb?
Last Answer : Heat each lead and lift with tweezers.
Description : Major component of flint glass is (A) Lead oxide (B) Silica (C) Alumina (D) Soda
Last Answer : (A) Lead oxide
Description : Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is (A) 5CaO. 3 Al2O3 (B) 3CaO. Al2O3 (C) 3CaO. SiO2 (D) 2CaO. SiO2
Description : The powder component of IRM is essentially A. EBA with methyl methacrylate B. Zinc oxide with EBA C. Zinc oxide and aluminum oxide D. Zinc oxide and methyl methacrylate E. Zinc oxide and ethyl methacrylate
Last Answer : D. Zinc oxide and methyl methacrylate
Description : What component in a blocking oscillator controls pulse width?
Last Answer : Transformer.
Description : What component is in parallel with the output in a parallel limiter?
Last Answer : The diode.
Description : What component(s) is/are used for low-frequency compensation for Q2?
Last Answer : R9 and C5.
Description : What component(s) is/are used for high-frequency compensation for Q1?
Last Answer : L1, L2, and R5.
Description : What component in an amplifier circuit tends to limit the low-frequency response of the amplifier?
Last Answer : The coupling capacitor (C3).
Description : If current gain is required from an rf amplifier, what type of component should be used as an output coupling element?
Last Answer : A step-down transformer.
Description : The area between base 1 and base 2 in a UJT acts as what type of common circuit component?
Last Answer : Variable resistor.
Description : Which receiver component converts the IF pulses to video pulses?
Last Answer : Detector.
Description : Which component of the receiver produces the signal that is mixed with the received signal to produce the IF signal?
Last Answer : Local oscillator.
Description : What transmitter component allows the radiation of a large number of discrete frequencies over a wide band?
Last Answer : . Frequency synthesizer.
Description : What radar component permits the use of a single antenna for both transmitting and receiving?
Last Answer : Duplexer.
Description : When you are measuring a component using a bridge, what is the most common cause of inaccurate measurements?
Last Answer : The capacitive and inductive characteristics of the test leads.
Description : In an electron tube regulator, the electron tube replaces what component?
Description : Which fiber optic component (splice, connector, or coupler) makes a permanent connection in a distributed system?
Last Answer : Splice.
Description : Describe an optical fiber cable component (OFCC).
Last Answer : OFCCs are tight-buffer fiber surrounded by arimid yarn and a low-halogen outer jacket.
Description : What device sweeps a band of frequencies to determine frequencies and amplitudes of each frequency component?
Last Answer : Spectrum analyzer.
Description : To perform microminiature component repair, a 2M technician must be currently certified in what area?
Last Answer : Microminiature component repair.
Description : What term describes a device used to conduct heat away from a component?
Last Answer : A thermal shunt.
Description : A cylindrical copper block with resonant cavities around the circumference is used as what component of a magnetron?
Last Answer : Anode or plate
Description : The folded waveguide in a bwo serves the same purpose as what component in a twt?
Last Answer : Helix.
Description : What methods are used to prevent unwanted component interaction?
Last Answer : Ground planes, shielding, and component placement.
Description : Microcircuit refers to any component containing what types of elements?
Last Answer : Integrated circuits.
Description : The head driver circuit in a tape recorder’s direct record electronics component (figure 5-1) performs what function?
Last Answer : It takes the signal from the summing network, amplifies it, and sends it to the record head for recording.